BB/T 0084-2021Paper - based laminated materials for retortable food packaging stored under ambient conditions (English PDF)

4.1 Basic requirements

Paper-based composite materials for storage and packaging of cooked food at room temperature shall comply with the relevant national food safety standards.

4.2 Appearance quality

4.2.1 There should be no pollution and no foreign matter.

4.2.2 The printed pattern should be complete and clear, without obvious deformation, defects and misprints.

4.2.3 The inner and outer surfaces should be flat, without holes, cracks and bubbles.

4.3 Dimensional deviation

The allowable deviation of the length and width of the material in the form of a single product should be ±1mm respectively.

The allowable deviation of the width dimension of the material in roll form shall be ±1mm.

4.4 Quantification of inner plastic film

The quantification of the plastic film within the barrier layer should not be less than 19g/m2.

4.5 Physical and mechanical properties

Physical and mechanical properties should meet the requirements of Table 1.

Table 1 Physical and mechanical properties

Project requirements drop performance (The container capacity is not more than 500mL, and the drop height is 1m) no rupture, no leakage Peel strength of inner plastic film N/15mm >=4.0 oxygen transmission rate cm3/(m2·24h) Aluminum foil<=1.0 Other barrier materials<=10.0 stiffness mN the container capacity is not more than 250mL Vertical >=160 Horizontal >=80 the container capacity is greater than 250mL, and not more than 500mL Vertical >=.200 Horizontal >=120 heat resistance no obvious deformation, interlayer peeling, of heat-sealed parts, etc.

common phenomenon. The printing pattern is complete and clear without obvious deformation

5.1 Appearance quality

Appearance quality is checked visually under natural light.

5.2 Dimensional deviation

Test according to GB/T 6673.

5.3 Quantification of inner plastic film

The quantification of the inner plastic film shall be tested according to the corresponding provisions of Appendix A or Appendix B according to the barrier material of the sample.

5.4 Physical and mechanical properties

5.4.1 Drop performance

The drop performance shall be tested according to the provisions of GB/T 4857.5.Filled and autoclaved molded products should be packaged (for food raw materials) the molded packaged product after the manufacturer has filled the actual food, or the sample package filled with water by the packaging material manufacturer, if the results are inconsistent, the actual product shall be the result of the canned food shall prevail), fall freely at a height of 1m, and keep the bottom vertically downward when falling. The drop performance test shall be Smooth, hardened, level surface without sharp objects (such as calendered cement floor or terrazzo floor, etc.). The drop test should be carried out under the high pressure of the product 48h after sterilization. Five filled individually packaged samples shall be taken for testing, and each sample shall be dropped once. After the drop test on the package Pack the sample for visual inspection, and the 5 packages used for testing shall be free of leakage or rupture.

5.4.2 Peel strength of inner plastic film

The peel strength of the inner plastic film shall be tested according to the provisions of method A in GB/T 8808-1988.

5.4.3 Oxygen transmission rate

The oxygen transmission rate shall be tested according to the provisions of GB/T 19789.

5.4.4 Stiffness

Stiffness shall be tested according to the provisions of Chapter 4 Method 1 Constant-speed Bending Method in GB/T 22364-2018.

5.4.5 Heat resistance

The test sample should be treated according to the specified time and temperature to achieve its sterilization effect (up to 130 °C), for example, the packaging should be used according to the the food manufacturers of the materials process the processing of their commercial products. Priority should be given to the use of the food manufacturer's product after filling the actual food.

Type packaging products are used as test samples. If the sample cannot be obtained, the sample package filled with water from the packaging material manufacturer can be used for testing.

The test should be operable, and if the results are inconsistent, the test results of the actual filled food sample package shall prevail. 10 filled individual should be taken Test the heat resistance of the vertical packaging samples. After the samples are processed, visually check whether the packaging has obvious deformation, peeling between layers, peeling of heat-sealed parts, etc.

Abnormal phenomenon, 10 samples should pass the heat resistance test.

6.1 Batch

The same variety, the same specification, and the continuous production of no more than 8,000,000 packages of products is a batch.

6.2 Inspection classification

6.2.1 Factory inspection

The factory inspection items are appearance quality (4.2) and dimensional deviation (4.3).

6.2.2 Type inspection

Type inspection items are all items in Chapter 4: Type inspection shall be carried out in one of the following situations.

a) When the variety of raw materials, product structure of packaging materials, and production processes are changed;

b) When the production is stopped for more than 6 months, when the production is resumed;

c) When continuous production is completed for one year;

d) When first produced.

6.3 Sampling

6.3.1 Appearance quality and dimensional deviation shall be carried out in accordance with the provisions of GB/T 2828.1, using the normal inspection secondary sampling plan, the special inspection level S-4, the acceptance quality limit (AQL) is 2.5, see Table 2.

Table 2 Sampling scheme of appearance quality and size deviation

Batch/Sample Sample Size Cumulative Sample Size Receive Quality Limit (AQL) Acceptance Ac Rejection Re <=35000 First second 35001~500000 First second >=500001 First second

6.3.2 Product quality

Quantitative, physical and mechanical properties sampling of the inner plastic film, in batches, according to the requirements of the test items, take enough samples for testing.

test.

6.4 Judgment

6.4.1 Determination of sample unit

Products supplied in the form of a single product shall be taken as a sample unit; products supplied in the form of reels shall be converted into the number of packages.

Take samples, one package is one sample unit, if all items are qualified, the sample unit is qualified.

6.4.2 Determination of qualified items

6.4.2.1 Appearance quality and dimensional deviation are determined according to Table 2.

6.4.2.2 If there are any unqualified items in the quantitative and physical and mechanical properties inspection of the inner plastic film, double samples should be taken from the original batch of products to check the unqualified items.

If the re-inspection results are all qualified, the quantitative and physical and mechanical properties of the inner plastic film of the batch of products are qualified; if the re-inspection is still unqualified, the this batch of products failed.

6.4.3 Determination of qualified batches

If the products are qualified according to 6.4.2.1 and 6.4.2.2, the batch of products is qualified.

7.1 Logo

The product should have a qualified mark, indicating the product name, specification, quantity, batch number, manufacturer, production date, etc.

7.2 Packaging

Products supplied as individual products are packaged in cartons, placed on pallets or in other cartons, and then wrapped with shrink wrap or stretch wrap.

Wrap around the film as a whole. Products supplied on rolls are packed in cartons or pallets after shrink wrapping. It can also be controlled by both supply and demand parties agreed.

7.3 Transport

When transporting, it should be handled with care to prevent mechanical collision or contact with sharp objects, prevent sun and rain, and be free from contamination.

7.4 Storage

Packaging materials should be stored in a clean, dry and ventilated warehouse, away from heat and pollution sources, and are strictly prohibited from being mixed with toxic, harmful and odorous items.

Store in the same warehouse. The storage period of packaging materials shall not exceed 1 year from the date of its production.

Appendix A

(normative)

Quantitative test method for inner plastic film (with aluminum foil as barrier material) A.1 Inspection instruments and reagents A balance with an accuracy of 0.001g.

25% hydrochloric acid solution.

1% sodium acetate solution.

A.2 Inspection steps A.2.1 Cut 3 samples with an area of 50cm2 or 100cm2 from the packaging material sample with a circular knife or a disc cutter.

A.2.2 Separate the sample from the cardboard and keep the side with the inner plastic film and aluminum foil.

A.2.3 Put the separated retained sample into the hydrochloric acid solution and soak it for 24h until the aluminum foil is completely dissolved. The sample was then placed in a sodium acetate solution Neutralize in liquid. Rinse the sample with water, peel off the inner plastic film, and leave it to dry.

A.2.4 Weigh the three samples on the balance respectively, convert the result to g/m2 (quantitative quantity of the inner plastic film), take the average value of the three samples Indicates the result, accurate to 1 decimal place.

Appendix B

(normative)

Test method for quantification of inner plastic film (other barrier materials) B.1 Testing Instruments and Reagents A balance with an accuracy of 0.001g.

1.1 (volume ratio) mixture of toluene and ethanol.

Constant temperature water bath.

B.2 Inspection Conditions Use a constant temperature water bath to heat the mixture of toluene and ethanol to 60°C±5°C.

B.3 Inspection steps B.3.1 Materials supplied in the form of reels. use a circular knife or a disc milling cutter to cut a sample with an area of 50cm2 or 100cm2 from the sample 3; Material supplied as a single product. Cut 3 samples with an area of 50cm2 or 100cm2 according to the size.

B.3.2 Immerse the sample in a mixture of toluene and ethanol for 10 minutes, gently separate the inner plastic film, and then leave it for 120 minutes.

B.3.3 Weigh the three samples on the balance respectively, convert the result to g/m2 (quantitative quantity of the inner plastic film), take the average value of the three samples Indicates the result, accurate to 1 decimal place.